 |
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
| Datasheet File OCR Text: |
| PI5C32X245 16-Bit, 2-Port BusSwitch Product Features: * * * * Near-Zero propagation delay 5 switches connect inputs to outputs Direct bus connection when switches are ON Ultra-low quiescent power (0.2A typical) - Ideally suited for notebook applications * Pin compatible with QS32X245 * Industrial operating temperature: -40C to +85C * Packaging (Pb-free & Green available): - 40-pin 150-mil wide plastic BQSOP (B) Description: Pericom Semiconductor's PI5C32X245 is a 16-bit, 2-port bus switch. Two enable signals (BEn) turn the switches on. The bus switch creates no additional propagational delay or additional ground bounce noise. Pin Configuration NC A0 A1 A2 A3 A4 A5 A6 A7 Block Diagram A0 B0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 VCC A7 B7 BE1 B0 B1 B2 B3 B4 B5 B6 B7 VCC BE1 A8 B8 GND NC A8 A9 A10 A11 A12 A13 A14 A15 A15 B15 BE2 B8 B9 B10 B11 B12 B13 B14 BE2 GND B15 Truth Table(1) Function Disconnect Connect BEn H L Hi-Z B0-15 A0-15 Pin Description Pin Name BEn A0-A15 B0-B15 I/O I I/O I/O Description Bus Enable Input (Active LOW) Bus A Bus B Note: 1. H = High Voltage Level, L = Low Voltage Level, Hi-Z = High Impedance 1 PS7057E 09/16/04 PI5C32X245 16-Bit, 2-Port BusSwitch Maximum Ratings (Above which the useful life may be impaired. For user guidelines, not tested.) Storage Temperature ..........................................................-65C to +150C Ambient Temperature with Power Applied .........................-40C to +85C Supply Voltage to Ground Potential (Inputs & Vcc Only) ...-0.5V to +7.0V Supply Voltage to Ground Potential (Outputs & D/O Only) -0.5V to +7.0V DC Input Voltage ..................................................................-0.5V to +7.0V DC Output Current............................................................................120 mA Power Dissipation .................................................................................0.5W Note: Stresses greater than those listed under MAXIMUM RATINGS may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect reliability. DC Electrical Characteristics (Over the Operating Range, TA = -40C to +85C, VCC = 5V 10%) Parameters VIH VIL IIH IIL IOZH VIK IOS VH ROH Description Input HIGH Voltage Input LOW Voltage Input HIGH Current Input LOW Current High Impedance Output Current Clamp Diode Voltage Short Circuit Current(3) Test Conditions(1) Guaranteed Logic HIGH Level Guaranteed Logic LOW Level VCC = Max., VIN = VCC VCC = Max., VIN = GND 0 A, B VCC VCC = Min., IIN = -18 mA A (B) = 0V, B (A) = VCC Min. 2.0 -0.5 - - - - 100 - VCC = Min., VIN = 0.0V, ION = 48 mA VCC = Min., VIN = 2.4V, ION = 15 mA - - Typ(2) - - - - - -0.7 - 150 5 10 Max. - 0.8 1 1 1 -1.2 - - 7 15 V mA mV A Units V Input Hysteresis at Control Pins Switch On-Resistance(4) Capacitance (TA = 25C, f = 1 MHz) Parameters(5) CIN COFF CON Input Capacitance A/B Capacitance, Switch Off A/B Capacitance, Switch On VIN = 0V Description Test Conditions Typ 6 6 12 pF Units Notes: 1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device type. 2. Typical values are at VCC = 5.0V, TA = 25C ambient and maximum loading. 3. Not more than one output should be shorted at one time. Duration of the test should not exceed one second. 4. Measured by the voltage drop between A and B pin at indicated current through the switch. On-Resistance is determined by the lower of the voltages on the two (A,B) pins. 5. This parameter is determined by device characterization but is not production tested. 2 PS7057E 09/16/04 PI5C32X245 16-Bit, 2-Port BusSwitch Power Supply Characteristics Parameters ICC ICC Description Quiescent Power Supply Current Supply Current per Input @ TTL HIGH Supply Current per Input per MHz(4) VCC = Max. VCC = Max. VCC = Max., A and B Pins Open BEn = GND Control Input Toggling 50% Duty Cycle Test Conditions(1) VIN = GND or VCC VIN = 3.4V(3) Min. Typ(2) 0.1 Max. 3.0 2.5 Units A mA ICCD 0.25 mA/ MHz Notes: 1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device. 2. Typical values are at Vcc = 5.0V, +25C ambient. 3. Per TTL driven input (VIN = 3.4V, control inputs only); A and B pins do not contribute to Icc. 4. This current applies to the control inputs only and represent the current required to switch internal capacitance at the specified frequency. The A and B inputs generate no significant AC or DC currents as they transition. This parameter is not tested, but is guaranteed by design. Switching Characteristics over Operating Range Parameters tPLH tPHL tPZH tPZL tPHZ tPLZ Description Propagation Delay(2,3) Ax to Bx, Bx to Ax Bus Enable Time BEX to Ax or Bx Bus Disable Time BEx to Ax or Bx CL = 50pF RL = 500 Conditions(1) Com. Min. -- 1.5 1.5 Max. 0.25 6.5 5.5 ns Unit Notes: 1. See test circuit and waveforms. 2. This parameter is guaranteed but not tested on Propagation Delays. 3. The bus switch contributes no propagational delay other than the RC delay of the On-Resistance of the switch and the load capacitance. The time constant for the switch alone is of the order of 0.25ns for 50pF load. Since this time constant is much smaller than the rise/fall times of typical driving signals, it adds very little propagational delay to the system. Propagational delay of the bus switch when used in a system is determined by the driving circuit on the driving side of the switch and its interaction with the load on the driven side. 3 PS7057E 09/16/04 PI5C32X245 16-Bit, 2-Port BusSwitch Packaging Mechanical: 40-pin BQSOP (B) X.XX DENOTES DIMENSION IN MILLIMETERS X.XX Ordering Information Ordering Code PI5C32X245B PI5C32X245BE Package Code B B 40-pin BQSOP Pb-free & Green, 40-pin BQSOP Package Description Notes: 1. Thermal characteristics can be found on the company web site at www.pericom.com/packaging/ Pericom Semiconductor Corporation * 1-800-435-2336 * www.pericom.com 4 PS7057E 09/16/04 |
Price & Availability of PI5C32X245
 |
|
|
|
|
All Rights Reserved © IC-ON-LINE 2003 - 2022 |
| [Add Bookmark] [Contact Us] [Link exchange] [Privacy policy] |
|
Mirror Sites : [www.datasheet.hk]
[www.maxim4u.com] [www.ic-on-line.cn]
[www.ic-on-line.com] [www.ic-on-line.net]
[www.alldatasheet.com.cn]
[www.gdcy.com]
[www.gdcy.net] |